Shaza Khan, Huma Batool, Zeenat Umar. Comparison Effectiveness of Epidural Catheter by using Two Techniques Air Versus Saline as Pre-emptive Analgesia in Obstetric Patients. Pakistan Journal of Medical & Health Sciences [Internet]. 2024 Jan. 21 [cited 2026 Jan. 30];18(01):747. Available from: https://mail.pjmhsonline.com/index.php/pjmhs/article/view/7020